对于“场”下面说法不正确的是：（）A.所有的视频文件都带有场 B.只有通过逐行扫描视
题型：多项选择题
问题：
对于“场”下面说法不正确的是：（）
A.所有的视频文件都带有场
B.只有通过逐行扫描视频设备采集的文件才带有场
C.通过DV1394采集的视频文件总是上场优先（Upper Field First）
D.通过DV1394采集的视频文件总是下场优先（Lowe rField First）
题型：多项选择题
| 阅读理解。 |
| Sophia Wu, 25, is a young Chinese woman who does business with her family in Santiago, Chile (智 利). On February 27, she experienced a night that she will never forget. "I was asleep and was woken up by powerful shaking at around 3:30 in the morning. My whole room was moving and I couldn't stand still. I wanted to run downstairs and go outside, but suddenly the wall got broken and the lights in the room went out. The room became so shaky that I couldn't move at all." That night an 8.8-magnitude (震级) earthquake hit Chile. Buildings and bridges fell down. Electricity (电) and water services shut down. The Chilean Red Cross reported that about 500,000 homes were destroyed and more than 800 people died. The earthquake has been the fifth strongest since 1900. More than 90 aftershocks (余震) followed the earthquake. A tsunami (海啸) was set off in the Pacific Ocean by the earthquake.Scientists say that there are about 500,000 earthquakes in the world each year. Of these, only 20% are felt, and 100 of them cause damage. So far, scientists haven't found a way to predict earthquakes. But you can learn to protect yourself during an earthquake. The most important thing to remember is to drop, cover and hold on. So remember to drop to the floor, get under something for cover and hold onto something strong during the shaking. |
| 1. What happened to Sophia Wu on February 27? |
| A. Her house was burned in a fire. B. She dreamed a terrible dream. C. Her family died in a terrible accident. D. A serious earthquake hit the city she was in. |
| 2. Which is the correct order (顺序)? |
| a. Wu got up and found her whole room was moving. b. Wu wanted to run downstairs and go out. c. The wall got broken and the lights went out. d. Wu was woken up by shaking. A. a-b-c-d B. d-a-b-c C. d-b-a-c D. c-a-b-d |
3. Wh ich is TRUE about the Chile Earthquake? |
| A. It had no aftershocks. B. It destroyed five million homes. C. It caused a tsunami in the Pacific Ocean. D. It has been the fourth strongest earthquake since 1900. |
| 4. From the passage, we know that about of the earthquakes cause damage every year |
| A. 20% B. 10% C. 1% D. 0.02% |
| 5. How should we protect ourselves during an earthquake? |
A. We should run outside as quic kly as possible.B. We should drop, cover and hold on. C. We should shout loudly for help. D. We should call 120 quickly. |
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